The MarsHydro Reflector fits much better in a small square 4’ by 4’ grow tent than many of the rectangular panels we’ve reviewed. We noticed some slight singing when we used the “flower” setting, but there were no such problems with the “veg” setting – one of the perks of an adjustable spectrum. Those with other lights in consideration will probably prefer to use this one as a back-up light, but it definitely excels when compared to less expensive options.